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Profiling antioxidant, vitamins and other phytochemicals in Portuguese Tomato Landraces

2017Conference object Open access
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dc.contributor.authorMontoya, César
dc.contributor.authorPinela, José
dc.contributor.authorBarros, Lillian
dc.contributor.authorCarvalho, Ana Maria
dc.contributor.authorRocha, Filomena
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2018-02-12T15:04:39Z
dc.date.available2018-02-12T15:04:39Z
dc.date.issued2017
dc.description.abstractTomato (Solanum lycopersicum L.) is a key element of the Mediterranean diet and a source of nourishment for the world's population [1]. During the evolution and domestication of this plant, genetic modifications and severe inbreeding of limited genotypes occurred [2]. As a result, a wide range of fruits with different morphological and sensorial attributes gave rise to a number of landraces that have been cultivated for centuries. These landraces represent a reservoir of genetic diversity that can be used in fruit breeding programs. However, since information about the chemical variation present among tomato landrace populations is still limited, this study aimed to profile the bioactive compounds of Portuguese landraces. Seeds from tive accessions of tomato landraces ("coração de boi", "maçã", "tomate", "redondo" and "vermelho") from the "Santarém" region, conserved ex-situ at the Portuguese Bank of Plant Germplasm, in Braga, were grown in order to regenerate and characterize these plant materiais. The ripe fruits were hand harvested and analyzed for lycopene (by a spectrophotometric method), ascorbic acid (by HPLC coupled to a photodiode array detector) and tocopherols (by HPLC coupled to a fluorescence detector) [3]. The antioxidant activity of hydroalcoholic extracts was evaluated using the in vitro assays of DPPH' scavenging activity, reducing power and p-carotene bleaching inhibition capacity. Total phenolics and flavonoids were estimated by colorimetric methods [3]. Different leveis of vitamins and other phytochemicals were detected in the studied samples, as well as different antioxidant activities. In general, the highest leveis of lycopene and tocopherols (important lipophilic antioxidants) were found in the "coração de boi" and "vermelho" landraces. a-Tocopherol was the most abundant isoform in ali samples, followed by Y-tocopherol. Ascorbic acid was particularly abundant in the "redondo" and "coração de boi" varieties. The "vermelho" tomato also revealed an interesting levei of total phenolics and a high reducing capacity. High leveis of total flavonoids and a high DPPH' scavenging activity were attributed to the "maçã" landrace. This study highlights Portuguese tomato landraces as health-promoting superfoods (or functional foods) with high leveis of powerful antioxidants involved in protection against free radical-induced diseases.pt_PT
dc.description.sponsorshipTo the Foundation for Science and Technology (FCT, Portugal) and FEDER under Pmgramme PT2020 for financiai support to CIMO (UID/AGR/00690/2013) and J. Pinela grant (SFRH/BD/92994/2013).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMontoya, C.; Pinela, José; Barros, Lillian; Carvalho, Ana Maria; Rocha, F.; Ferreira, Isabel C.F.R. (2017). Profiling antioxidant, vitamins and other phytochemicals in Portuguese Tomato Landraces. In 3rd Symposium on Medicinal Chemistry of University of Minho. Bragapt_PT
dc.identifier.urihttp://hdl.handle.net/10198/15687
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationRECOVERY OF THE SUSTAINABLE USE OF TRADITIONAL FOODS THROUGH EMERGING PRESERVATION TECHNOLOGIES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleProfiling antioxidant, vitamins and other phytochemicals in Portuguese Tomato Landracespt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleRECOVERY OF THE SUSTAINABLE USE OF TRADITIONAL FOODS THROUGH EMERGING PRESERVATION TECHNOLOGIES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F92994%2F2013/PT
oaire.citation.conferencePlaceBraga, Portugalpt_PT
oaire.citation.title3rd Symposium on Medicinal Chemistry of University of Minhopt_PT
oaire.fundingStream5876
person.familyNamePinela
person.familyNameBarros
person.familyNameCarvalho
person.familyNameFerreira
person.givenNameJosé
person.givenNameLillian
person.givenNameAna Maria
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifierID G-7399-2011
person.identifier144781
person.identifier.ciencia-id771C-2B43-B108
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-idD31A-35AF-E2A9
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0001-7523-1637
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0001-5508-5935
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridB-4466-2014
person.identifier.ridJ-3600-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id54392272800
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id20336503900
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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